作　　者： ; ; ; ; (张国磊）;

机构地区： 中国石油大学北京化学工程学院重质油国家重点实验室

出　　处： 《石油学报（石油加工）》 2009年第3期313-318,共6页

摘　　要： 为了研究催化裂化过程中油、剂混合初期混合热量对重油分子裂化反应的影响规律,采用连续反应-再生提升管催化裂化中型实验装置,通过调节剂/油质量比和再生剂温度,考察了油-剂混合热量对重油催化裂化反应过程产品分布的影响,并从烃类结构基团转化的角度深入分析了油-剂混合热量与重油催化转化效率之间的内在关系。结果表明,通过提高剂/油质量比,增加油-剂混合热量,可以提高催化剂与重油分子的接触几率,有利于强化烃分子与催化剂之间的热量和物质传递,从而更加有效地实现重油烃类大分子的裂化反应,弱化多环芳烃与其它烃类分子在催化剂表面的竞争吸附效应,改善重油发生催化裂化本征反应的环境,在相同转化率下获得更高的轻质油收率和液收率。 In order to investigate the influence of the high catalyst-oil mixing heat on residue catalytic cracking, the product distributions of residue catalytic cracking at different mass ratio of catalyst to oil and different reaction temperatures were studied by using a technical pilot scale riser FCC apparatus. The hydrocarbon structural groups were analyzed to obtain deep understanding of the relation between the conversion and the catalyst-oil mixing heat. The results showed that the increase of catalyst in oil mass ratio could increase the catalyst-oil mixing heat and the probability of molecular collision between catalyst and oil, intensifying the mass and heat transfers, which effectively enforced the cracking of residue and weakened the competitive adsorption of the polycyclic aromatic hydrocarbons with the other hydrocarbons to get more active sites for intrinsic reaction of catalytic cracking and lead to higher yields of light oil and total liquid products.

关 键 词： 催化裂化 油 剂混合热量 剂 油质量比 轻质油

领　　域： [石油与天然气工程]